Gardening of the Martian Regolith by Diurnal CO2 Frost and the Formation of Slope Streaks

L.Lange, S.Piqueux, C.S.Edwards

Jet Propulsion Laboratory, California Institute of Technology

Copyright 2022. All rights reserved.

Corresponding author: Sylvain Piqueux
Jet Propulsion Laboratory
M/S 183-301
4800 Oak Grove Drive
Pasadena, CA 91109
USA

Sylvain.Piqueux@jpl.nasa.gov
Phone: 818-393-9595
Fax: 818-354-2494


Supporting information associated with the paper "Gardening of the Martian Regolith by Diurnal CO2 Frost and the Formation of Slope Streaks" by L. Lange et al. consists of 9 files generated as part of this work and used to generate several of the figures of this paper:

- THEMIS_TotalPicture.txt is a 33236 x 4  semicolon separated table of characters and floats in ascii format containing: 
Column 1) the ID of THEMIS visible images analyzed in this study;
Column 2) the center latitudes [°] of the images, north
Column 3) the center Longitudes [°] of the images, east
Column 4) the heliocentric longitude of the images [°]
This file was used for the analysis, and for to generate Figures 2, 3, and 4, directly, or indirectly.

- THEMIS_TCO2.txt is a 3259 x 4 semicolon separated table of characters and floats in ascii format containing: 
Column 1) the ID of THEMIS visible images meeting the CO2 frost criteria described in the paper; 
Column 2) the center latitudes [°] of the images, north
Column 3) the center Longitudes [°] of the images, east
Column 4) the heliocentric longitude of the images [°]
This file was used for the analysis, and for to generate Figures 2, 3, and 4, directly, or indirectly.

- THEMIS_TCO2_IssuesRemoved.txt is a 2761 x 4 semicolon separated table of characters and floats in ascii format containing: 
Column 1) the ID of THEMIS visible images meeting the CO2 frost criteria described in the paper without the images were calibration issues are suspected;
Column 2) the center latitudes [°] of the images, north
Column 3) the center Longitudes [°] of the images, east
Column 4) the heliocentric longitude of the images [°]
This file was used for the analysis, and for to generate Figures 2, 3, and 4, directly, or indirectly.

- THEMIS_Detection.txt is a 1914 x 6 semicolon separated table of characters and floats in ascii format containing:
Column 1) the ID of THEMIS visible images meeting the CO2 frost criteria described in the paper without the images were calibration issues are suspected, and presenting a visible frost signature.
Column 2) the center latitudes [°] of the images, north
Column 3) the center Longitudes [°] of the images, east
Column 4) the heliocentric longitude of the images [°]
Column 5) the class of the detection [1], ranging from 1 to 4 (see the paper for the definition of the classes). 
Column 6) The terrain type where frost is detected, "f" is for flat terrain, "sc" for small crater, "s" for slope, "c" for crater.
This file was used for the analysis, and for to generate Figures 2, 3, and 4, directly, or indirectly.

- Data_Fig_2.txt is a 360 x 180 space separated table of floats in ascii format containing top of the atmosphere solar insolation [W/m^2], in simple cylindrical projection, spatial resolution of 1 value per degree. Longitude (x axis, [°]) range from 1 to 360, 1 degree step. Latitudes (y axis, [°]) range from 89.5 to -89.5, 1 degree step.
This file was used for the generation of Figure 2. 

- Data_Fig_5a.txt is a 452 x 2 space separated table of floats in ascii format containing:
Column 1) thermal inertia values (1st column, [J/M^2/K/s^{1/2}]) 
Column 2) corresponding grain size [micrometers], extracted from Kieffer (2013).
This file was used for the generation of Figure 5.

- Data_Fig_5b.txt is a 392 x 2 space separated table of floats in ascii format containing:
Column 1) the CO2 frost point [K]
Column 2) the corresponding mean of surface temperature [K] for images acquired where the thermal inertia is lower than 100 Jm-2K-1s-1/2.
This file was used for the generation of Figure 5.

- Data_Fig_6.txt is a 2552885 x 1 table of floats in ascii format containing:
Column 1) the wind velocity reached during the sublimation of the CO2 ice [m/s].
This file was used for the generation of Figure 6.

- Data_Fig_7.txt is a  1000 x 13 table of floats in ascii format containing w* required for grain movements (see text for definition of theta, psi and alpha):
Column 1) Grain size [m]
Column 2)  w* for theta = 00°, psi = 60°, alpha = 1e-5  [m/s]
Column 3)  w* for theta = 10°, psi = 60°, alpha = 1e-5  [m/s]
Column 4)  w* for theta = 20°, psi = 60°, alpha = 1e-5  [m/s]
Column 5)  w* for theta = 30°, psi = 60°, alpha = 1e-5  [m/s]
Column 6)  w* for theta = 00°, psi = 60°, alpha = 5e-5  [m/s]
Column 7)  w* for theta = 10°, psi = 60°, alpha = 5e-5  [m/s]
Column 8)  w* for theta = 20°, psi = 60°, alpha = 5e-5  [m/s]
Column 9)  w* for theta = 30°, psi = 60°, alpha = 5e-5  [m/s]
Column 10) w* for theta = 00°, psi = 60°, alpha = 1e-6  [m/s]
Column 11) w* for theta = 10°, psi = 60°, alpha = 1e-6  [m/s]
Column 12) w* for theta = 20°, psi = 60°, alpha = 1e-6  [m/s]
Column 13) w* for theta = 30°, psi = 60°, alpha = 1e-6  [m/s]
This file was used for the generation of Figure 7.


